By the time a herb shop goes through the capsuling they usually make a mix so there is some impact to their bottom line.
You either need to find a mix that fits your needs or buy the herb and capsule it yourself.
Two things to keep in mind with wormwood:
- the younger the plant the better (don't use old shrubs)
- the asian type is more effective (sweet annie)
Wormwood like chlorella absorbs toxins like lead so the older shrubs are BOTH less effective and possibly toxic.